Load Specifications
Load data in caliber 7 x 72 R with .284 | 161gr | SUS-TAC LRT bullet and 30 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Somchem S365.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4064 | <<locked>> | 86% | 36,274 psi | 89% | 2274 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 35,810 psi | 88% | 2264 fps | 97.5% |
| Alliant Reloder-15 | <<locked>> | 84% | 36,521 psi | 90% | 2274 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 90% | 35,491 psi | 87% | 2326 fps | 96.6% |
| Bofors RP3 | <<locked>> | 86% | 35,114 psi | 86% | 2264 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 36,593 psi | 90% | 2293 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 34,490 psi | 85% | 2264 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,389 psi | 85% | 1480 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 36,608 psi | 90% | 2244 fps | 97.2% |
| IMR 3031 | <<locked>> | 84% | 36,390 psi | 90% | 2287 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 36,042 psi | 89% | 2221 fps | 95.9% |
| IMR 4895 | <<locked>> | 82% | 34,838 psi | 86% | 2251 fps | 96.3% |
| Lovex D073.6 | <<locked>> | 82% | 36,550 psi | 90% | 2274 fps | 99.2% |
| Lovex S062 | <<locked>> | 84% | 35,984 psi | 89% | 2234 fps | 97.9% |
| Norma 203B | <<locked>> | 84% | 35,839 psi | 88% | 2264 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 84% | 35,186 psi | 87% | 2267 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,476 psi | 85% | 1512 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 35,491 psi | 87% | 2339 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 82% | 35,781 psi | 88% | 2208 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 88% | 35,027 psi | 86% | 2254 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 82% | 36,550 psi | 90% | 2274 fps | 99.2% |
| Shooters World Precision | <<locked>> | 84% | 35,984 psi | 89% | 2234 fps | 97.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 36,680 psi | 90% | 2185 fps | 99.9% |
| Somchem S355 | <<locked>> | 88% | 36,463 psi | 90% | 2267 fps | 97.2% |
| Somchem S365 | <<locked>> | 98% | 35,389 psi | 87% | 2333 fps | 98.1% |
| Vihtavuori N135 | <<locked>> | 84% | 36,579 psi | 90% | 2241 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 35,012 psi | 86% | 2198 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 92% | 34,751 psi | 86% | 2218 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 82% | 34,505 psi | 85% | 2215 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 35,621 psi | 88% | 2234 fps | 96.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4064 | <<locked>> | 80% | 30,037 psi | 74% | 2142 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,631 psi | 73% | 2129 fps | 95.4% |
| Alliant Reloder-15 | <<locked>> | 82% | 34,113 psi | 84% | 2224 fps | 95.3% |
| Alliant Reloder-17 | 34.8 gr | 88% | 33,243 psi | 82% | 2274 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 28,732 psi | 71% | 2123 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 32,590 psi | 80% | 2205 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,271 psi | 79% | 2215 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,657 psi | 63% | 1322 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 32,489 psi | 80% | 2159 fps | 95.8% |
| IMR 3031 | <<locked>> | 80% | 32,053 psi | 79% | 2198 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 33,968 psi | 84% | 2175 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 32,851 psi | 81% | 2208 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 80% | 34,113 psi | 84% | 2224 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 31,720 psi | 78% | 2142 fps | 96.6% |
| Norma 203B | <<locked>> | 80% | 31,546 psi | 78% | 2172 fps | 95% |
| Ramshot Big Game | <<locked>> | 82% | 32,982 psi | 81% | 2218 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,831 psi | 64% | 1355 fps | 100% |
| ReloadSwiss RS 60 | 31.6 gr | 80% | 27,412 psi | 68% | 2129 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 33,721 psi | 83% | 2165 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 84% | 30,734 psi | 76% | 2162 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,113 psi | 84% | 2224 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 31,720 psi | 78% | 2142 fps | 96.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,269 psi | 75% | 2060 fps | 99.1% |
| Somchem S355 | <<locked>> | 84% | 32,126 psi | 79% | 2175 fps | 95.8% |
| Somchem S365 | 34.5 gr | 92% | 29,530 psi | 73% | 2195 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 80% | 32,300 psi | 80% | 2159 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 32,996 psi | 81% | 2159 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 84% | 27,311 psi | 67% | 2051 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 32,518 psi | 80% | 2172 fps | 98.8% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 33,431 psi | 82% | 2188 fps | 95.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 57 powders for 7 x 72 R loaded with the .284 | 161gr | SUS-TAC LRT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,339 fps; across all powders the maximum-charge window runs from 1,480 fps to 2,339 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 57 of the 57 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 74–90 %, leaving at least 10 % headroom. The 161.0 gr projectile in 0.284" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Hodgdon TrailBoss, IMR 4831 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. ReloadSwiss RS 60, Alliant Reloder-17, Somchem S365 rank at the top here: for 7 x 72 R with the .284 | 161gr | SUS-TAC LRT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Power Pro 2000-MR, Alliant Reloder-16, Alliant Reloder-23 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.